Heater



(No Model.) 2 Sheets-S-heet 1.

W. J. JACKSON. HEATER.

No. 492.207. 4 Patente-d Peb. 21, 1893.

A ,E n 0.0.....00000 mo Mpdl.) u 2 sheets-sheet 2.

W. J. JACKSON.

HEATER. No. 492,207. Patented Peb. 21, 18Q3.

UNITED STATES PATENT OFFICE.

WILLIAM J. JACKSON, OF PHILADELPHIA, PENNSYLVANIA.

HEATER.

SPECIFICATION forming part of Letters Patent No. 492,207, dated February 21, 1893.

Application filed March 29, 1892. SerialNo. 426,878. (No model.)

To all whom it may concern.-

Beit known that I, WILLIAM J. JACKSON, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Improvementin Heaters, which improvement is fully set forth in the following specification and accompanying drawings.

My invention consists of a heater having converging air-heating flues over thecombustion chamber, and means substantially as described for heating the sides and rear of the heater, so as to provide additional means for heating the cold and also fresh air, as will be hereinafter set forth.

Figure l represents a partial front view and partial transverse vertical section of a heater embodying my invention. Fig. 2 represents a longitudinal vertical section thereof. Fig. 3 represents a perspective view taken from the rear and partly broken away.

Similar letters of reference indicate corresponding parts in 'the several figures.

Referring to the drawingsz-A designates the combustion chamber or lire-pot of a furnace, and B the ash-pit thereof.

Rising from the exterior of the sides of the chamber A, is a casing C, between the walls of which and the walls of said chamber are spaces forming the depending flues D, within which are horizontally-arranged perforated plates E, the upper portions of said flues above said plates being closed at the rear by the back plate F of the body of the furnace. The portions of the lines below said plates E, communicate at the rear with the exit fines G, G.

Supported on the casing C is the roof or crown H of the combustion chamber, the same being converging and having secured thereto the fines J, which are also converging, and open at both ends, so that air from the cold air chamber K is adapted to pass through said fines and enter the hot air chamber L, which chambers are suitably formed by the exterior casing M, and outer portions of the furnace. It will be seen that the products of combustion highly heat the iiues J, and then descend into the iiues D, thus heating the casing C, whereby the cold air entering the chamber K, is heated by contact therewith, by which provisions the chamber L is supplied with air of an exceedingly high tem- 'with said walls P and Q.

Connected with the casing C and the inner walls of the flues D, which walls constitute the sides of the air chamber R, are air fines T, which form communications between said chamber R and the cold air chamber K. Now as the air is heated in said chamber R, it is directed by the flues T into the chamber K, and from thence into and through the top fines J, and thus an increased volu me of hot air is supplied to the chamber L.

The furnace is provided with the necessary doors, those U of the fines D permitting the latter to be easily cleansed, as most plainly shown in Fig. 1, as said fines are accessible at the front of the furnace.

The plates or diaphragms E serve to break the direct current of the draft in the flues D, and prevent concentration of the same at the rear end thereof, whereby the walls of said fines are uniformly heated.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. A furnace having a combustion chamber, a casing rising from the exterior of the sides of said chamber forming depending flues, perforated horizontal plates in Said fines, and an exit iue in communication with said depending tlues below said plates, said parts being combined substantially as described.

2. A furnace having a combustion cham ber, a casing rising from the exterior of the sides of said chamber, forming depending fines, a converging roof for said chamber supported on said casing, converging lines secured on said roof and exterior casing, forming chambers above and below said roof, said parts being combined substantially as described. t

3. A furnace having a combustion cham- IOO ber with a rear air chamber, a casing rising ing, and communicating with the said airand from the exterior side of said. combustion exterior chambers, said parts belng comblned chamber forming depending flues colnmunisubstantially as descrlbed.

eating with said combustion chamber, an eX- WILLIAM J. JACKSON. 5 terorcasing forming chambers outside of said Witnesses:

iues, and tubes connected with the inner JOHN A. WIEDERSHEIM,

walls of the flues and the firstmentioned cas- L. J ENNINGS. 

